Home / 201,519.55-278,136.75-115,536.30

Finding the Fourth Proportional to 201,519.55, 278,136.75 and 115,536.30

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Solution

The fourth proportional to 201,519.55, 278,136.75 and 115,536.30 is: 159,462.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,519.55 : 278,136.75 = 115,536.30 : x
  2. Step 2: Convert to fraction form
    201,519.55/278,136.75 = 115,536.30/x
  3. Step 3: Cross multiply
    201,519.55x = 278,136.75 × 115,536.30
  4. Step 4: Simplify right side
    201,519.55x = 32,134,890,989.03
  5. Step 5: Solve for x
    x = 32,134,890,989.03/201,519.55
  6. Step 6: Final answer
    x = 159,462.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.